30420344 has 16 divisors (see below), whose sum is σ = 60393600. Its totient is φ = 14315392.

The previous prime is 30420343. The next prime is 30420347. The reversal of 30420344 is 44302403.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30420343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111704 + ... + 111975.

It is an arithmetic number, because the mean of its divisors is an integer number (3774600).

Almost surely, 2^30420344 is an apocalyptic number.

30420344 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

30420344 is a deficient number, since it is larger than the sum of its proper divisors (29973256).

30420344 is a wasteful number, since it uses less digits than its factorization.

30420344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223702 (or 223698 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 30420344 is about 5515.4640783891. The cubic root of 30420344 is about 312.1677544064.

Adding to 30420344 its reverse (44302403), we get a palindrome (74722747).

The spelling of 30420344 in words is "thirty million, four hundred twenty thousand, three hundred forty-four".